Jig.



A. S. ABBUTT.

JIG.

APPLICATION FILED MAR. I3. 191'6.

1,230,974. Patented June 26, 1917.

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A. S. ABBOTT.

APPLICATION FILED MAR. 13. me.

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. JIG.

APPLICATION FILED MARJS. 1916. 1,239,974.

Patented June 26, 1917.

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ALFRED S. ABBOTT, OF SPRINGFIELD, 4MISSOURI, ASSIGNOR OF ONE-THIRD TOJ'. E. BUKER, OF CHICAGO, ILLINOIS, AND ONE-THIRD TO JOI-IN F. LONG ,OFSPRINGFIELD,

MISSOURI.

J IG.

Application led March 13, 1916.

To all whom t may concern.'

Be it known that I, ALFRED S. ABBOTT, a citizen of the United States,residing at Springfield, in the county of Greene and State of Missouri,have invented certain new and useful Improvements in Jigs, of

work of this character which may be readily attached to an ordinaryturret lathe, and which will be capable of adjustments giving the devicea considerable range of utility.

The invention is illustrated, in a preferred embodiment, in theaccompanying drawings, wherein- Figure 1 is a plan view of a turretlathe with the jig of my invention shown as applied thereto.

Fig. 2 is a side elevation of the lathe.

Fig. 3 is a plan view of the jig on an enlarged scale showing also aportion of the blank on which the tool forming part of the jig operates.

Fig. 4 is a sectional view on line 4 4 of Fig. 3.

Fig. blank.

Fig. 6 is a fragmentary section on line 6-6 of Fig. 8.

Fig. 7 is a sectional view taken through the partially cut blank vandthrough the finishing roller which operates to remove the 5 is asectional plan of the jig and burs from the work.

Fig. 8 shows three packing rings which are cut and finished at oneoperation by means of the jig when constructed as shown in the precedingfigures.

Fig. 9 is a view, similar to Fig. 5, showing the device modified so thatit will produce a type of packing somewhat different from that producedby -the device shown in the preceding figures.

Specification of Letters Patent.

Patented J une 26, 1917.

Serial No. 83,821.

Fig.'10 is a sectional view on line 10-10 of Fig. 9.

Fig. 11 is aview similar to Fig. 7 further illustrating themodification.

Fig. 12 is a fragmentary perspective view of the blank from which thisother type of packing is cut; and

Fig.v 13 is a view, in perspective, of the product.

Like characters of reference designate like parts in the several guresof the drawings.

While the jig of my invention might be employed in connection with othermachines, it is most conveniently used on a turret lathe` of thefamiliar type shown in Figs. 1 and 2. 10 is the framework of themachine, 11 theturret which is supported on a carrier 12 movable to andfrom the automatic chuck 13. 14 is the tool holder having a dove-tailedconnection, shown at 15, with the turret so as to be movable thereontransversely of the machine.

The device of my invention is intended particularly to operate upon atubular blank 16 which is held in the chuck 13 and is revolved axiallyby any suitable mechanism.

The jig, as shown in Figs. 1 to 8 inclusive, consists preferably of ayoke 17, which is furnished with certain tools to be hereinafterdescribed, and is formed with a shank 18 vfor rigid attachment to thetool holder 14. On one armv 19 of the yoke is secured, by means of bolt20, a cutting blade 21 adapted to operate against the outer surface ofthe tubular blank 16 to reduce the thickness thereof. Assuming that theblank is to be cut into packing rings, for example, the rings whichareused in sets of six in the air pumps of air brake systems, thejig isprovided with means for cutting, and `finishing in one operation threesuch rings. The ring `A (Figs. '5, 7 and 8) is beveled for its entirecured to the tool support, preferably in angular relation with the blankoperated upon, is a cutting tool 27 which operates to reduce thethickness of the blank from the inside. It is adjustably secured to thetool support by bolts 28, 29, the latter of which passes through anelongated slot 30 in the cutting tool 27. The arm 31 of the yoke has anopening 32 therethrough in which are arranged transverse cutters 33, 34,35, spaced apart Aby spacing blocks 36, the blocks and cutters beingheld in rigid relation in the yoke by any suitable means, for example,by means of the wedge key 37. The cutters are arranged with theircutting edges out of line with each other so that they come into contactwith the work one after the other. The ring B is not severed from theblank until after the ring A is cut. The third ring, C, is cut off'after B has been cut. In the preferred embodiment of my invention thesevering of the rings is accomplished by moving the tool holder 14transversely on the turret in the direction indicated by the featheredarrow in Fig. 1. This movement brings the transverse cutters 33, 34, 35into operative engagement with the tubular blank 16, and moves thecutting tool 21 away from the blank. The tool 27 operates on the side ofthe blank adjacent the transverse cutters so that this tool does notinterfere with the movement of the jig necessary to make the transversecuts. Preferably the jig is provided with a finishing member, thepurpose of which is to smooth off the burs made by the transversecutters 33, 34, 35. 38 is a rocking member pivoted on a stud 39 betweenears 40 on the arm 31 of the yoke. The rocking member is provided withlay fork 41 in which is pivoted on shaft 42 a roller 43 having thegeneral contour of the blank after it has been cut by the tool 21. Thesmoothing or finishing roller may be applied to the blank during theoperation of cutting off theJ rings in the manner best shown in Fig. 7.The roller has a beveled surface 44 adapted to bear against the beveledsurface a of ring A, a beveled surface 45 adapted to bear against theJbeveled surface b of ring B, and a cylindrical surface 46 adapted tobear against theJ cylindrical surfaces of rings B and C.

Operation: The work which may be a tubular blank of Babbitt, or othermetal or metal composition used for packing rings, is held in therevoluble chuck 13 in the usual manner. The jig is moved toward theblank by the forward movement of the turret carrier 12 until the arms19, 31 of the yoke stand on opposite sides of the blank. This brings thetool 27 in contact with the inner surface of the blank and the tool 21in contact with the outer surface. The end of the blank is reduced indiameter both from the inside and outside and shaped as shown in Fig. 3.To cut the shaped end of the blank into rings, the tool holder 14 ismoved transversely on turret 11` bringing the blanks against cutters 3334 and 35 so that the rings A, B and C are successively severed from theblank. During this operation the finishing roller 43 is pressed againstthe partially cut rings smoothing theouter surfaces of the same andremoving any burs which may be raised by the operation of making thetransverse cuts.

In Figs. 9 to 13, inclusive, I have shown the jig modified so that itwill produce packing rings of the sort known as the King type ofpacking. A set of this type of packing ordinarily consists of twotwo-part rings D, D. The rings are cut from a blank consisting of tworoughly semi-cylindrical over-lapped pieces 47, 48 (Fig. 12). The deviceshown in Figs. 9, 10 and 11 may be in all respects like that shown inthe preceding figures (and corresponding parts are correspondinglynumbered in the drawing) except that the device has a single transversecutter 49 instead of three cutters 33, 34, 35 of the other form; thetransverse cutter 49 being held in place in the yoke by means of twoblocks 50, 51.

While I have described my invention in certain preferred embodiments, itwill be understood that the device might be modified in other respectsthan those shown without departing from the invention. For example, ifthe device were constructed for use on a lathe in which the tool holderdoes not have transverse movement, the cutters 33, 34, 35 might bearranged so as to be movable in the yoke to and from the work. I

wish it to be understood, therefore, that the invention is notconsidered as being limited to the precise constructions, arrangementsand devices shown except so far as certain of the claims are expresslyso limited. The claims refer to the blank as tubular. I mean by thisterm to cover a twopart blank such as is shown in Fig. 12, as well asthe one-piece blank first referred to in the specification.

' In the description and in certain of the claims I have used the term"jig to designate a simple form of tool-holding device provided with oneor more cutting or polishing tools that may be applied to a lathe in itsoperative position as a whole.

I claim:

1. In combination with means for holding and giving axial rotation to atubular metal blank, a jig provided with tools to operate on the outsideof the blank, and a cutting tool to operate on the inner surfacethereof; said ig being adapted to be moved laterally with respect tosaid metal blank to move said tools into and out of operative engagementwith said blank.

2. In combination With means for holding and giving axial rotation to atubular metal blank, a jig having a pair of arms adapted to extend onopposite sides of the blank and provided with tools adapted to operateon the outer surface of the same, and a cutting tool arranged betweensaid arms adapted to operate on the inner surface th-ereof; said jigbeing adapted to be moved laterally With respect to said metal blank tomove said tools into and out of operative engagement with said blank.

3. In combination with means for holding and giving axial rotation to atubular metal blank, a jig having a pair of arms adapted to extend onopposite sides of the blank provided with tools adapted to operateagainst the outer surface of the same, a tool support between said arms,and a tool adapted to operate upon the inner surface of said tubularblank and formed so as to permit angular adjustment on said toolsupport.

4. In combination with means for holding and giving axial rotation to atubular metal blank, a jig provided With-a cutting tool adapted tooperate upon the inner surface of the blank at one point thereof toreduce the thickness of the blank from the inside, and a cutting tool tosimultaneously reduce the thickness of the blank from the outside; saidjig being adapted to be moved laterally with respect to said metal blankto move said tools into and out of operative engagement with said blank.

5. In combination With means for holding and giving axial rotation to atubular metal blank, a jig provided with a cutting tool to reduce thethickness of the blank from the inside, and a cutting tool arrangeddiametrically opposite the first-named tool to simultaneously reduce thethickness of the blank from the outside and to bevel the end of thesame; said jig being adapted to be moved laterally with respect to saidmetal blank to move said tools into and out of 0perative engagement withsaid blank.

6. In combination With means for holdino and giving axial rotation to atubular metal blank, a jig provided with a cutting tool to reduce thethickness of the blank from the inside, and a cutting tool tosimultaneously reduce the thickness of the blank from the outside and toform tWo bevels on the same, one at the end and one spaced a trifle fromthe other; said jig being adapted to be moved laterally with respect tosaid metal blank to move said tools into and out of operative engagementWith said blank.

7 In combination With means for holding and giving axial rotation to atubular metal blank, a jig provided with a cutting tool to reduce thethickness of the blank from the inside, a cutting tool to simultaneouslyreduce the thickness of the blank from the outside, and transversecutters adapted to be moved into engagement with the blank to sever thesame into rings; said being adapted to be moved laterally With respectto said metal blank to move said tools into and out of operativeengagement with said blank.

8. In combination with means for holding and giving axial rotation to atubular metal blank, a jig provided with a cutting tool to reduce thethickness of the blank from the inside, a cutting tool to simultaneouslyreduce the thickness of the blank from the outside and to bevel the endof the same, and transverse cutters adapted to be moved into engagementWith the blank to sever the same into rings; said jig being adapted* tobe moved laterally With respect to said metal blank to move said toolsinto and out of op` erative engagement With said blank.

9. In combination with means for holding and giving axial rotation to atubular metal blank, a jig provided with a cutting tool to reduce thethickness of the blank from the inside, a cutting tool to simultaneouslyreduce the thickness of the blank from the outside and to form tWobevels on the same, one at the end and one spaced a triiie from theother, and transverse cutters to sever the blank into rings, one of saidcutters operating against the blank between said bevels.

10. In combination With means for holding and giving axial rotation to atubular metal blank, a jig provided With a cutting tool to reduce thethickness of the blank from the inside, a cutting tool to simultaneously reduce the thickness of the blank from the outside, transversecutters to sever the blank into rings, and a finishing tool to removeburs. j

11. In combination with means for holding and giving axial rotation to atubular metal blank, a provided With a cutting tool to reduce thethickness of the blank from the inside, a cutting tool tosimultaneouslyv reduce the thickness of the blank from the outside, arocking device on said jig, and a nishing roller on the rocking devicehaving a contour corresponding to the contour of the cutting blank.

l2. In combination With means for holding and giving axial rotation to atubular metal blank, a jig provided With a cutting tool to reduce thethickness of the blank from the inside, a cutting tool to simultaneouslyreduce the thickness of the blank from the outside and to bevel the endof the same, transverse cutters to sever the blank into rings, a rockingdevice on said jig, and a finishing roller on the rocking device havinga contour corresponding to the conto-ur of the cut blank.

13. In combination with means for holding and giving axial rotation to atubular metal blank, a jig provided With a cutting tool to reduce thethickness of the blank from the inside, a cutting tool to simultaneouslyreduce the thickness of the blank from the outside and to form twobevels, one at the end of the blank and one spaced a trifle from theother, transverse cutters to sever the blank into rings, one of saidcutters operating between the two bevels, and a finishing roller havinga contour corresponding to the contour of the cut blank. 14. Incombination with means for holding and giving axial rotation to atubular metal blank, a jig provided with a cutting tool adapted toreduce the thickness of the blank from the inside, and with a pluralityof transverse cutters adapted to be moved into contact with the blankand arranged so as to cut off rings from the blank successively, saidfirst-named cutting tool being adapted to be moved out of operativecontact with the blank before said rings are cut off.

15. In combination with means for holding and giving axial rotation to atubular metal blank, a jig provided with a plurality of transversecutters arranged so as to cut off rings from the blank successively, andwith a finishing roller having a contour corresponding to the contour ofthe blank.

16. In combination with means for holding and giving axial rotation to atubular metal blank, a jig provided with cutting tools, a rocking deviceon said jig, and a finishing roller revolubly mounted on said rockingdevice.

17. In combination with means for holding and giving axial rotation to atubular metal blank, a jig comprising a yoke, a cutting tool on one armof the yoke adapted to reduce the thickness of the blank from theoutside, a plurality of transverse cutters secured to the other arm ofthe yoke arranged so as to cut off rings from the blank in succession,and a vtool arranged between the arms of the yoke adapted to operateagainst the inner surface of the blank.

18. In combination with means for holding and giving axial rotation to atubular metal blank, a jig comprising a yoke, a cutting tool on one armof the yoke adapted to reduce the thickness of the blank from theoutside, a plurality of' transverse cutters secured to the other arm ofthe yoke arranged so as to cut oli' rings from the blank in succession,a rocking device on the arm having the transverse cutters, and afinishing roller on said rocking arm.

19. In combination with means for holding and giving axial rotation to atubular metal blank, a jig comprising a yoke, a cutting tool on one armof the yoke adapted to reduce the thickness of the blank from theoutside, a plurality of' transverse cutters secured to the other arm ofthe yoke arranged so as to cut ofl" rings from the blank in succession,a rocking device on the arm having the transverse cutters, a finishingroller on said rocking arm, and a cutting tool having capacity forangular adjustment arranged between the arms of said yoke.

20. In combination with means for holding and giving axial rotation to atubular metal blank, a jig comprising a yoke, a cutting tool on one armof the yoke adapted to reduce the thickness ofl the blank from theoutside and bevel the end of said blank, a plurality of transversecutters fixed in the other arm of the yoke with their cutting edges instepped relation so that they cut oli? rings from said blanksuccessively, a finishing roller having a rocking support and arrangedon the same arm of the yoke with the transverse cutters, a tool supportbetween the arms of said yoke, and a tool connected for angularadjustment with said tool support.

21. In combination with means for holding and giving axial rotation to atubular metal blank, a jig comprising a yoke, a cutting tool on one armof the yoke adapted to reduce the thickness of the blank from theoutside and form two bevels thereon, one at the end of the blank and theother spaced a trilie from the first named bevel, a plurality oftransverse cutters xed in the other arm of the yoke with their cuttingedges in stepped relation so that they cut ofi' rings from said blanksuccessively, a finishing roller having a rocking support and arrangedon the same arm of the yoke with the transverse cutters, a tool supportbetween the arms of' said yoke and adjustable with respect to the yoke,and a tool connected for angular adjustment with said tool support.

ALFRED S. ABBOTT.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

